मराठी

What is the Action of Water on Sodium ? Write Equation of the Chemical Reaction Involved.

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प्रश्न

What is the action of water on sodium ? Write equation of the chemical reaction involved.

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उत्तर

Sodium reacts with water vigorously to form sodium hydroxide and hydrogen gas with a large amount of heat.
  2Na(s) + 2H2O(l) → 2NaOH(aq) + H2(g) + HEAT

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 3: Metals and Non-metals - Exercise 1 [पृष्ठ १३४]

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लखमीर सिंह Chemistry [English] Class 10
पाठ 3 Metals and Non-metals
Exercise 1 | Q 54.1 | पृष्ठ १३४

संबंधित प्रश्‍न

A solution of CuSO4 in water is .................... in colour.
(a) Pink
(b) Blue
(c) Colourless
(d) Green


Food cans are coated with tin and not with zinc because ______.


A solution of _________________ in water is green in colour.

(a) CuSO4
(b) FeSO4
(c) ZnSO4
(d) Al2(SO4)3


From amongst the metals sodium, calcium aluminium, copper and magnesium, name the metal:
(i) which reacts with water only on boiling, and
(ii) another which does not react even with steam.


Name two metals which form amphoteric oxides.


Name the metal which has been placed just below copper in the reactivity series.


Complete and balance the following equation:


Fill in the following blank with suitable word:

The white powder formed when magnesium ribbon burns in oxygen is of ....................


Write one reaction in which aluminium oxide behaves as a basic oxide and another in which it behaves as an acidic oxide.


What happens when calcium reacts with water? Write the chemical equation of the reaction of calcium with water.


An element X forms two oxides XO and XO2. The oxide XO has no action on litmus solution but oxide XO2 turns litmus solution red.
(a) What is the nature of oxide XO?
(b) What is the nature of oxide XO2?
(c) Would you call element X a metal or a non-metal? Give reason for your choice.
(d) Can you give an example of element like X?


State and explain the reaction, if any, of the following metals with a solution of copper sulphate:
(a) Gold
(b) Copper
(c) Zinc
(d) Mercury


In nature, metal A is found in a free state while metal B is found in the form of its compounds. Which of these two will be nearer to the top of the activity series of metals?


Name a metal which does not react with cold as well as hot water but reacts with steam.


What is the characteristic of the electronic configuration of noble gases?


Calcium floats over water during the reaction with water. Give reason.  


Write the chemical equation for the following reaction:
Cinnabar is heated in the presence of air.


Which one among the following is an acidic oxide?


A cable manufacturing unit tested few elements on the basisof their physical properties.

Properties W X Y Z
Malleable Yes No No Yes
Ductile Yes No No Yes
Electrical conductivity Yes Yes Yes No
Melting Point High Low Low High

Which of the above elements were dicarded for usage by the company?


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